The use of separate stormwater Best Management Practices (BMPs) has become common in United States, Europe, Australia and other parts of the world. Much of this technology is emerging and, as a result, it is sometimes used without fully understanding its limitations and without recognizing its effectiveness under field conditions. This paper presents and evaluates a number of structural and non-structural BMPs. The evaluations are based on extensive literature review, field observation and discussions with stormwater professionals in many parts of United States about their experience with BMP performance.